The Dialogs.prompt function displays a text message and a default
input value, and requires that the user accept the default input or enter
a different value. The displayed message is said to prompt the user for
an input.

The input value is returned by this function.

The mandatory message parameter is a string or text that requests
an input from the user.

The mandatory defaultinput parameter can be either a variable or
a string value that will be displayed as the default input. You can use
the empty string "" if you do not wish to display a default input.